Astral’s second Mandilla rights deal: mine planning implications for engineers
Reviewed by Joe Ashwell

First reported on Australian Mining
30 Second Briefing
Astral Resources has signed a binding deal to acquire Estrella Resources’ nickel rights across five Spargoville tenements, covering ground Astral describes as potentially critical to the Mandilla gold project development footprint near Kalgoorlie, WA. The consideration is 20 million Astral shares, consolidating control of both gold and nickel over the same tenure and simplifying future pit design, waste dumps and infrastructure placement. For mine planners and geologists, unified rights reduce sterilisation risk and facilitate integrated drilling, resource modelling and potential nickel by-product studies.
Technical Brief
- Tenement consolidation removes third‑party constraints on pit wall orientation, haul road alignments and waste dump geometry.
- Unified tenure simplifies future location of processing plant, ROM pad and tailings or waste storage facilities.
- Nickel rights control allows geometallurgical domaining for both commodities from single drill platforms and pit phases.
- Single owner of subsurface rights reduces sterilisation buffers between gold and nickel orebodies in mine design.
- Future geotechnical drilling can be sequenced to capture data for both gold pit slopes and nickel underground options.
Our Take
The move to acquire nickel rights over five Spargoville tenements suggests Astral Resources is trying to leverage its existing gold footprint at Mandilla and Spargoville into a polymetallic position, which can improve optionality in mine planning and future processing routes.
The earlier $9.05 million deal with WIN Metals for Mandilla tenure, combined with this share-based payment of 20 million Astral shares for nickel rights, signals a preference for mixed cash–equity structuring that preserves liquidity while still consolidating control over key ground in Western Australia’s Kalgoorlie region.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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